weighing scales

i am going to buy some weighing scales,(dial type) but am on a very tight budget !
i cant afford (reuben heaton) or whatever they are called, and am more looking at ones by keenets.
has anyone got scales by this company or another cheap good set to recommend.
they must go up in 1oz increments as that is about the fish sive i catch and preferably go to 40lb's.
?20 is about the most i have to spend

My local shop are selling the Nash dial scales for about ?25.
Their RRP is ?29.99.
They're not the best in the world, but about the best I've seen for the money.
They do 56 and 112lb versions.

I would buy a secondhand set of `Avon` scales